This review presents recent developments in the application of nuclear magnetic resonance (NMR) spectroscopy for studying the structure and dynamics of ionic liquids. We in particular focus on protic ionic liquids which are characterized by strong hydrogen bonding and proton transfer. Thus, the most relevant NMR-active nucleus is the proton, which undergoes rapid exchange on the NMR time scale. Also, other nuclei are considered if they provide information beyond simple characterization of this unique liquid material. We addressed several NMR techniques which are traditionally or just recently used in the field of ionic liquids research: relaxation time experiments, pulsed-field gradient NMR, fast-field-cycling NMR, electrophoretic NMR, and solid state NMR. Also, novel experiments such as dynamic nuclear polarization NMR are discussed.
[NMR paper] Selective binding and dynamics of imidazole alkyl sulfate ionic liquids with human serum albumin and collagen - a detailed NMR investigation.
Selective binding and dynamics of imidazole alkyl sulfate ionic liquids with human serum albumin and collagen - a detailed NMR investigation.
Selective binding and dynamics of imidazole alkyl sulfate ionic liquids with human serum albumin and collagen - a detailed NMR investigation.
Phys Chem Chem Phys. 2018 Mar 21;:
Authors: Reddy RR, Shanmugam G, Madhan B, Phani Kumar BVN
Abstract
The interaction of ionic liquid (IL) with protein is now becoming important as it stabilizes the protein due to the selective cation-anion...
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03-22-2018 06:35 PM
Journal Highlight: A review of NMR methods used in the study of the structure and dynamics of ionic liquids
Journal Highlight: A review of NMR methods used in the study of the structure and dynamics of ionic liquids
http://www.spectroscopynow.com/common/images/thumbnails/1613355a2ed.jpgThis mini-review presents a brief research summary of the applications of NMR spectroscopy to the structure and dynamics of pure ionic liquids and their mixtures with lithium salts.
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01-29-2018 01:57 PM
[NMR paper] Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins.
Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins.
Related Articles Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins.
Angew Chem Int Ed Engl. 2017 Sep 17;:
Authors: Ludwig R, Khudozhitkov AE, Stange P, Golub B, Paschek D, Stepanov AG, Kolokolov DI
Abstract
We present the first...
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09-19-2017 04:40 PM
[NMR paper] Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins
Characterization of doubly ionic hydrogen bonds in protic ionic liquids by NMR deuteron quadrupole coupling constants - Differences to H-bonds in amides, peptides and proteins
We present the first deuteron quadrupole coupling constants (DQCC) for selected protic ionic liquids (PILs) measured by solid-state NMR spectroscopy. The experimental data are supported by dispersion-corrected density functional theory (DFT-D3) calculations and molecular dynamics (MD) simulations. The DQCCs of the N-D bond in the triethylammonium cations are the lowest reported for deuterons in PILs indicating...
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09-18-2017 10:41 AM
Ionic liquids: Enzymatic cellulose processing
Ionic liquids: Enzymatic cellulose processing
http://www.spectroscopynow.com/common/images/thumbnails/1514834b12b.jpgThe promise of room temperature ionic liquids (RTILs) as alternatives to toxic and inflammable volatile organic solvents for green chemistry has been on the boil for at least a couple of decades. Now, team has found that enzymatic activity can be sustained in processing cellulose, from wood, for conversion of this raw material into other useful compounds.
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12-01-2015 10:21 AM
Electron Spin–Lattice Relaxation Mechanisms of Nitroxyl Radicals in Ionic Liquids and Conventional Organic Liquids: Temperature Dependence of a Thermally Activated Process
From The DNP-NMR Blog:
Electron Spin–Lattice Relaxation Mechanisms of Nitroxyl Radicals in Ionic Liquids and Conventional Organic Liquids: Temperature Dependence of a Thermally Activated Process
A detailed understanding of the electron-spin relaxation mechanisms in polarizing agents used for DMP-NMR spectroscopy is crucial for the understanding of the DNP process and to optimize polarizing agents for different DNP applications. The entire study was performed at X-Band frequencies (9 GHz, 14 MHz 1H) and provides many details about the relaxation behavior of nitroxide radicals -...
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07-08-2015 11:11 PM
Post-Doc fellowship in NMR Methods to Study Ionic Solids/liquids - Univ. of Aveiro/Lisbon (Portugal)
Post-Doc fellowship in NMR Methods to Study Ionic Solids/liquids - Univ. of Aveiro/Lisbon (Portugal)
A 1-year postdoctoral position is available starting from January 2011, (extendable for additional 12 months) to study the “solid structure” of ionic liquids (ILs) and ionic solids (ISs) with relevance to the pharmaceutical industry. The research will be centred in the use of NMR techniques in tandem with molecular modelling to study the physical chemistry of molecular interactions in ILs and ISs. The project will be performed at the NMR centres at the Universities of Aveiro (solid state...
NMR Studies of Protic Ionic Liquids
Linear Mode
